20727723803 has 2 divisors, whose sum is σ = 20727723804. Its totient is φ = 20727723802.

The previous prime is 20727723761. The next prime is 20727723817. The reversal of 20727723803 is 30832772702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20727723803 - 2²⁰ = 20726675227 is a prime.

It is not a weakly prime, because it can be changed into another prime (20727723833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10363861901 + 10363861902.

It is an arithmetic number, because the mean of its divisors is an integer number (10363861902).

Almost surely, 2^20727723803 is an apocalyptic number.

20727723803 is a deficient number, since it is larger than the sum of its proper divisors (1).

20727723803 is an equidigital number, since it uses as much as digits as its factorization.

20727723803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 197568, while the sum is 41.

The spelling of 20727723803 in words is "twenty billion, seven hundred twenty-seven million, seven hundred twenty-three thousand, eight hundred three".